655020049 has 8 divisors (see below), whose sum is σ = 676455680. Its totient is φ = 633603600.

The previous prime is 655020017. The next prime is 655020053. The reversal of 655020049 is 940020556.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 655020049 - 2⁵ = 655020017 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 655020049.

It is not an unprimeable number, because it can be changed into a prime (655020089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104494 + ... + 110584.

It is an arithmetic number, because the mean of its divisors is an integer number (84556960).

Almost surely, 2^655020049 is an apocalyptic number.

It is an amenable number.

655020049 is a deficient number, since it is larger than the sum of its proper divisors (21435631).

655020049 is a wasteful number, since it uses less digits than its factorization.

655020049 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9591.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 655020049 is about 25593.3594707690. The cubic root of 655020049 is about 868.4634210696.

The spelling of 655020049 in words is "six hundred fifty-five million, twenty thousand, forty-nine".